Optimal Weight 5&1 Plan 2023 Reviews: Is It Safe?

Optimal Weight 5&1 Plan is weight management program designed to promote fat loss while preserving muscle strength, with expert coaching and guidance.

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In This Review


Trying to find the right weight loss solution can be tough. Everywhere you turn, there’s a new product saying it’s the best. Among these is the Optimal Weight 5&1 Plan, also known as Medifast 5&1.

This meal plan guarantees to help your body burn fat while maintaining muscle strength. While this sounds amazing, the price tag is high—over $400 for a box filled with things like snack bars and shakes.

So does this plan stand out from the rest? Or is it like any other?

In this review we will share our findings after examining the contents of the Optimal Weight 5&1 Plan package. We will also check how the diet works and see what people are saying about it.

Let’s closely examine the Optimal Weight 5&1 Plan and determine if it’s worth the money.

What Is the Optimal Weight 5 & 1 Plan?

The Optimal Weight 5&1 Plan is a program for managing weight. it promises to assist individuals in achieving their desired weight and maintaining the outcomes over time.

Participants eat six small meals daily, receive expert coaching, and utilize Optavia fuelings to control their diet. To participate in the program you’ll need to buy a kit that includes Optavia products, like snack bars, shakes, smoothies, cereals and soups.

With choices like the Essential Optimal Kit and Essential On-The-Go Kit, the plan promises a balance of fat-burning while retaining lean muscle mass. However there is debate regarding the effectiveness and worthiness of this meal plan considering its cost and the fact that it substitutes organic food with processed food in their meal plans.

How Does Optimal Weight 5 & 1 Plan Rate?

Overall Rating: 3.8
Optimal Weight 5 & 1 PlanOptimal Weight 5 & 1 Plan


Value for Cost

3.7/5Value for Cost
Return Policy

3.7/5Return Policy


Brand Highlights

  • Structured Weight Loss Approach
  • Expert Coaching
  • Fat Burning Focus
  • Convenience
  • Scientific Backing



*All individuals are unique. Your results can and will vary.

Key Ingredients

  • Fiber
  • Essential Vitamins and Minerals
  • Probiotics
  • Monk Fruit Extract


  • Structured Approach
  • Variety of Choices
  • Expert Coaching
  • Convenience
  • Lean & Green Meal


  • High Cost
  • Limited Dietary Flexibility
  • Processed Foods
  • Sustainability Concerns
  • Dependency Issues

About the Brand

The Optimal Weight 5&1 Plan, often called the Medifast 5&1 Plan, is a holistic weight management solution aiming to help participants reach their ideal weight.

Central to its philosophy is consuming six small meals daily, fortified with guidance from expert coaches and the strategic use of Optavia fuelings for dietary control. Participants are urged to invest in a kit packed with various Optavia offerings as part of the regimen.

Snack bars, shakes, smoothies, cereals and soups are just a few of their offerings. Key kits garnered attention include the Essential Optimal Kit, Select Favorites Kit, and the Essential On-The-Go Kit.

While some people appreciate the program’s emphasis on burning fat while maintaining muscle others have raised concerns about its cost and the inclusion of processed food choices.

How Does Optimal Weight 5&1 Work?

The optimal weight 5 & 1 operates on frequent portion-controlled meals paired with expert coaching to guide users toward achieving and maintaining their ideal weight.

There are over 60 meals to choose from. Users can only consume six small meals a day, where five of these meals come from Optavia fuelings, and one is a lean and green meal made by the user.

These portion controlled fuelings contain protein, fiber, essential vitamins and minerals, probiotics, and monk fruit extract. With these fuelings it is easier for users to stick to their weight loss plans and achieve their goals.

The continual intake of small meals every 2-3 hours is believed to keep the metabolism active, prevent extreme hunger, and promote a state of gentle fat-burning. The official brand stance is that their products and coaching lead to a more effective and sustained weight loss journey.

However the effectiveness of the Optimal Weight 5&1 Plan can vary among individuals, and its high cost is often a point of contention when weighing its overall value.

Optimal Weight 5&1 Key Ingredients – Are They Safe & Effective?

The Optimal Weight 5&1 Plan incorporates several key ingredients in its Optavia fuelings. Here are the key ingredients and components of their fuelings.


Protein is a macronutrient made of amino acids. It is essential for the body’s growth, repair and maintenance and can help reduce appetite and build lean muscle tissue.

A Journal of Sports Science and Medicine study[1]shows that it is popular in weight loss programs. The Obesity Facts Journal[2]also highlights that people on high protein diets can easily lose more weight.

Dr. Nancy Rodriguez, a registered dietitian and professor of nutritional sciences at the University of Connecticut, Storrs, says:

“Protein does more than just provide energy. It maintains and repairs all body parts, including muscles, bones, and fluids. Furthermore, high-protein diets can be effective for weight loss, helping to keep hunger at bay and support muscle preservation.”


Fiber is an indigestible carbohydrate (roughage) that aids digestion and gut health. As documented in Fiber Smart Reviews (another supplement containing this ingredient), it helps promote regularity and contributes to feelings of fullness, aiding in weight loss.

The Journal of Nutrition[3] also supports that fiber intake can support weight loss in those on a calorie-restricted diet.

According to Dr. Andrew Weil, M.D., a world-renowned leader in integrative medicine, “Eating a high-fiber diet is beneficial for health by promoting regular bowel movements, improving glucose control, and aiding in weight management.”

Essential Vitamins and Minerals:

Essential vitamins and minerals support overall health, from bone strength to immune function. And the NIH Office of Dietary Supplements[4] supports that essential vitamins and minerals have positive health effects.”

However the World Journal of Diabetes[5] notes that excessive intake of some vitamins might be linked to increased weight.

Dr. Mehmet Oz, a cardiothoracic surgeon and television personality, states, “Essential vitamins and minerals are the unsung heroes of our health, ensuring everything from strong bones to a robust immune system. However, it’s vital to remember balance.”


These are live microorganisms often found in fermented foods. The National Library of Medicine[6] states that probiotics promote gut health by aiding in digestion and helping to prevent issues like diarrhea and constipation.

As documented in our Probiotics And Prebiotics review they’re considered beneficial for overall health, with some strains showing promise in specific health areas such as weight loss.

Dr. Emeran Mayer, a gastroenterologist and author of “The Mind-Gut Connection,” states, “Probiotics play a pivotal role in maintaining a balanced gut environment. A healthy gut can directly influence our metabolism and, in turn, potentially aid in weight loss.”

Monk Fruit Extract:

The monk fruit extract is from the monk fruit, a small melon native to parts of Asia. Research in Heliyon[7] shows that this natural sweetener is often used as a low-calorie sugar substitute in foods and supplements. It’s considerably sweeter than traditional sugar, making it a popular choice for those looking to reduce sugar intake without sacrificing sweetness.

Dr. David Perlmutter, a neurologist and author states that, “Natural sweeteners like monk fruit offer a promising alternative without the potential drawbacks of sugar and artificial sweeteners.”

Verdict: We approve of the ingredients in the Optavia fuelings for the Optimal Weight 5&1 weight loss plan. However, these components must be mixed in balanced proportions for the best outcomes.

How to Use Optimal Weight 5&1?

To effectively use the Optimal Weight 5&1 Plan, follow these steps:
Purchase the Kit:

Begin by purchasing a suitable kit from the brand, which can be the Essential Optimal Kit, Select Favorites Kit, or the Essential On-The-Go Kit.

Follow the Daily Meal Structure:

Consume six small meals daily to maintain consistent energy levels and reduce hunger.

  • Choose five Optavia Fuelings from the kit every day. These are consumed every 2-3 hours.
  • Prepare one Lean and green Meal daily. This meal should be balanced and include a protein source and vegetables.

Get Expert Coaching:

Engage with the coaching provided as part of the plan. The expert advice can guide you through the process, helping you make informed choices and keep you on track.

Consume Optavia Fuelings:

These are designed to manage what you eat, ensuring you get a balance of nutrients. The offerings include snack bars, shakes, smoothies, cereals, soups, and other Optavia foods.

Monitor Your Progress Regularly:

Track your progress. Observe how your body reacts, adjust based on your needs, and seek advice from your coach if you face any challenges.

Stay Hydrated:

While not explicitly stated in the details provided, it’s always beneficial to drink plenty of water when on any weight loss plan.

Exercise and Engage in Physical Activities:

While the Optimal Weight 5&1 Plan focuses on diet, combining it with regular exercise can enhance results. Always ensure your physical activity aligns with your dietary intake and energy levels.


mct wellness

*All individuals are unique. Your results can and will vary.


Q: 1.What is the Optimal Weight 5&1 Plan?

A: The Optimal Weight 5&1 Plan, also known as the Medifast 5&1 Plan, is a weight loss program designed to help individuals reach their ideal weight. It involves consuming six small meals daily, including five Optavia fuelings and one self-prepared Lean & Green Meal.

Q: 2.How much does the Optimal Weight 5&1 Plan cost?

A: The plan typically costs between $350 to $425 for three weeks’ worth of food, amounting to 119 servings.

Q: 3.Are there any drawbacks to the Optimal Weight 5&1 Plan?

A: Some drawbacks include the high cost, reliance on processed foods, potential sustainability issues, and limited dietary flexibility.

Q: 4.How does the Optimal Weight 5&1 Plan promote weight loss?

A: The program promotes weight loss by putting the body in a fat-burning state while retaining lean muscle mass, achieved through controlled caloric intake from the fuelings and the Lean & Green Meal.

Q: 5.Can I return products if I’m not satisfied with the Optimal Weight 5&1 Plan?

A: Yes, but customers must obtain a Return Merchandise Authorization Number beforehand and are responsible for any shipping fees. It has a 30 refund policy and opened items cannot be returned.

Q: 6.How Much Does Optimal Weight 5&1 Cost?

A: The optimal weight 5 & 1 plan cost between $350 to $425 for three weeks’ worth of food, which amounts to 119 servings.

If you eat six times daily as required, a kit will only last about 20 days. So, you’ll likely spend about $400 to $500 a month.

Customer Reviews Of Optimal Weight 5&1

Here are optimal weight 5 and 1 plan reviews from users of this product from their official website:

“The Optavia Mint Chip bars are one of my favorite flavors from the 5&1 plan. I am a fan of mint anyway and they remind me of a Thin Mint girl scout cookie. I will be ordering them with each shipment. Some of the Optavia products have a protein powder smell and this one does not. A must have if you love mint chocolate.” –Sarah W

“I have 3 severe food allergies. Do they have plans that accommodate food allergies, no potential for cross contamination? My allergens are fish, shellfish & cinnamon (which is typically only labeled as spices or natural flavorings). I have been unable to take probiotics due to my fish allergy & same thing with collagen.” –Nicole

“I am on 5&1 Optavia program. Most of the feelings take time to get used to, but once you do it is easy to follow along. At first, it tasted like dirt, but my taste buds have completely changed. This has become my favorite fueling so far.” –Jessica U



*All individuals are unique. Your results can and will vary.


The Optimal Weight 5&1 Plan offers a structured approach to weight loss. It provides various meals and fuelings designed for daily consumption.

However, the fact that the program relies on processed foods and is expensive can be a concern for many. While the convenience and expert coaching is commendable, this program might not be sustainable for many subscribers.

Before you make a commitment, you should weigh the potential benefits against the drawbacks and be sure you can afford the meal for as long as required.

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MCT Wellness | Natural Weight Loss System
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Nucific Bio X4 | Best Weight Management Probiotic
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Phen24 | Best Weight-Loss Solution
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Product reviews are provided for informational purposes only and reflect solely the views and opinions expressed by the contributors and not those of Consumer Health Digest. We do not verify or endorse any claims made in these reviews. Please read the full product reviews disclaimer. *All individuals are unique. Your results can and will vary.

Customer Reviews for Optimal Weight 5&1 Plan

Optimal Weight 5&1 Plan 2023 Reviews: Is It Safe?

Customer Reviews & Ratings

4.0 out of 5

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  1. Jenny H.

    Optimal Weight 5 & 1 Plan worked for me.
    The Optimal Weight 5 & 1 Plan has revolutionized my weight loss journey. Having grappled with weight management challenges over the years, I found in this program a well-organized and highly efficient means to shed those stubborn extra pounds. What truly resonates with me is its straightforwardness. The regimen involves consuming five daily meal replacements, usually in the form of shakes or bars, complemented by a single “lean and green” meal in the evening.

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Optimal Weight 5&1 Plan
$350 to $425
Diet plan
Fiber, Essential Vitamins and Minerals, Probiotics, and Monk Fruit Extract.

7 Sources

We review published medical research in respected scientific journals to arrive at our conclusions about a product or health topic. This ensures the highest standard of scientific accuracy.

[1] Protein – Which is Best?: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3905294/
[2] Effect of a High-Protein Diet versus Standard-Protein Diet on Weight Loss and Biomarkers of Metabolic Syndrome: A Randomized Clinical Trial: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5644969/
[3] Fiber Intake Predicts Weight Loss and Dietary Adherence in Adults Consuming Calorie-Restricted Diets: The POUNDS Lost (Preventing Overweight Using Novel Dietary Strategies) Study: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6768815/
[4] Dietary Supplements for Weight Loss: https://ods.od.nih.gov/factsheets/WeightLoss-HealthProfessional/
[5] Excess vitamin intake: An unrecognized risk factor for obesity: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3932423/
[6] Can probiotics help against diarrhea?: https://www.ncbi.nlm.nih.gov/books/NBK373095/
[7] Replacement of refined sugar by natural sweeteners: focus on potential health benefits: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9519493/

**This is a subjective assessment based on the strength of the available informations and our estimation of efficacy.

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